Frost dates in Hamlin County, South Dakota
The average last spring frost in Hamlin County falls May 5 to May 10 and the average first fall frost Sep 27 to Oct 4, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a to 4b. Places: Bryant, Castlewood, Hayti, Hazel, Lake Norden. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 57221 | Bryant | May 5 | Oct 4 | 4b |
| 57223 | Castlewood | May 10 | Sep 27 | 4a |
| 57241 | Hayti | May 10 | Sep 27 | 4b |
| 57242 | Hazel | May 7 | Sep 30 | 4b |
| 57248 | Lake Norden | May 10 | Sep 27 | 4b |
Nearby counties
Kingsbury County Codington County Clark County Deuel County Brookings County Grant County
All South Dakota counties · Download South Dakota frost dates (CSV)
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